Handmade Roll up Leather Pen Case / Fountain Pen Holder / Pen - Etsy
Amazon.com: Adjustable Elastic Band Pen Holder, Pencil Holder, Pen Sleeve Pouch for Hardcover Journals, Notebooks, Planners, Fits Notebooks from 8" to 11” in Height, Hold 2 or 3 Pens, PU Leather, Detachable. :
BKxTSL] Pen Holder – Baum-kuchen
Traveler's Notebook Pen Holder (Medium) — The Gentleman Stationer